<?php
$i = 100;
echo $i;
echo "<br/>";

$j =1.13;
echo $j;
echo "<br/>";

$k = "赖不停nb";
echo $k;
echo "<br/>";

$l = 1;
echo $l;
echo "<br/>";

$m = true;
var_dump($m);
echo "<br/>";

$n = [1,1,2,2,3,3];
var_dump($n);
echo "<br/>";

$a = 100;
var_dump(is_numeric($a));
echo "<br/>";

$b = "1";
var_dump(is_numeric($b));
echo "<br/>";

$c = "01";
var_dump(is_numeric($c));
echo "<br/>";

$d = "10f";
var_dump(is_numeric($d));
echo "<br/>";

$e = "0x10a";
var_dump(is_numeric($e));
echo "<br/>";

$array1 = "Hello";
var_dump(is_array($array1));
echo "<br/>";


$array1 = [];
var_dump(is_array($array1));

